Im not sure, but i think that its c. i hope this helps
This literary device is an example of "foreshadowing" - an indication of how future events will be effected.
They lived among the Hidatsa and Mandan Indians in the upper Missouri River area (present-day North Dakota). In November 1804, an expedition led by Meriwether Lewis and William Clark entered the area. ... Lewis and Clark met Charbonneau and quickly hired him to serve as interpreter on their expedition.
I think the answer you are looking for is yes :)